By “special ed” do you mean children with conditions such as ADA and Down’s Syndrome or deafness or reading difficulties – or do you mean children who will never attain the intellectual abilities of a toddler. No one would argue that an educatable child in “special ed” is anyting but a normal child under halacha – our law is very broad and who is considered “normal” — under halacha one has to be very subnormal to be exempt from mitsvos in any way (and arguably any child so considered probably would not be included in “special education”). While calling someone a “shoteh” (fool) is a common insult, by halacha a “shoteh” is very serverely developmentally disabiled to the point of being largely uneducatable.
I suspect the original question may have been someone using “special education kids”, politely, to refer to someone incapble of every being able to function at more than the level of an infant — since anyone asking whether the normal sort of kids in special ed. (reading and behavior difficulties,mild develomental disabilities, etc.) would exempt them from mitsvos is obviously a “shoteh” (in the “insult” meaning of the work, not the halachic meaning).